HYDRONIC MII-12 Coolant Heater

Espar’s coolant heaters work independently of the engine and thus offer a double plus: pre-heating the vehicle’s passenger compartment and the engine. The heaters are integrated in the cooling system of the engine. The thermal energy gained is then distributed through the vehicle’s own heat exchanger as forced hot air and this heats the interior of the vehicle via existing air vents. The engine is warmed up with the residual heat in the cooling water.
Diesel Variant
Gasoline Variant
Hydronic MII-8
Hydronic MII-10
Hydronic MII-12
Heat Flow
- Low
4095 btu
- Medium
17,061 btu
- High
32,415 btu
- Power
42,000 btu
Fuel Consumption
- Low
0.04 gal/hr
- Medium
0.17 gal/hr
- High
0.32 gal/hr
- Power
0.40 gal/hr
Electrical Consumption Amps
- Low 12V (24V)
2.8 (1.6)V
- Medium 12V (24V)
3.8 (1.9)V
- High 12V (24V)
7.1 (3.6)V
- Power 12V (24V)
11.0 (5.5)V
13.7 lbs
13 x 5.4 x 6.9 in
Additional Heaters

Posted in Fuel Fired Heaters, Hydronic Coolant Heaters